標題: | Adaptive Thresholding Scheme for Demodulation of Rolling-Shutter Images Obtained in CMOS Image Sensor Based Visible Light Communications |
作者: | Chow, Chi-Wai Liu, Yen-Chun Shiu, Ruei-Jie Yeh, Chien-Hung 光電工程學系 光電工程研究所 Department of Photonics Institute of EO Enginerring |
關鍵字: | Light emitting diode (LED);visible light communication (VLC);CMOS image sensor |
公開日期: | 1-十二月-2018 |
摘要: | Light-emitting-diode transmitter and complementary-metal-oxide-semiconductor (CMOS) image sensor receiver based visible light communication is a promising scheme for an optical wireless communication. During the demodulation of the rolling shutter pattern obtained from the CMOS image sensor Rx, due to the high signal fluctuation introduced by the uneven light exposure, special thresholding schemes are needed to correctly identify the data logic. In this work, we propose and demonstrate a modified adaptive scheme (MQA) for the demodulation of the rolling shutter pattern. Experimental bit-errorratio (BER) measurements using different thresholding schemes at different illuminance are analyzed. The results show that the proposed MQA scheme can provide much lower BER, with similar process latencies when compared with other schemes. |
URI: | http://dx.doi.org/10.1109/JPHOT.2018.2876798 http://hdl.handle.net/11536/148413 |
ISSN: | 1943-0655 |
DOI: | 10.1109/JPHOT.2018.2876798 |
期刊: | IEEE PHOTONICS JOURNAL |
Volume: | 10 |
顯示於類別: | 期刊論文 |